Dresden 2009 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 11: Magnetic Materials

MA 11.7: Vortrag

Montag, 23. März 2009, 16:45–17:00, HSZ 103

Effects of film thickness and Co doping on the magnetism of Pd structures — •Volker Pankoke and Gemming Sibylle — FZD,Desden,Germany

Palladium in its ground-state has a non magnetic fcc structure. We suggest that it can be forced to get ferro-magnetic by an expansion of the lattice constant, or in case of thin films by a varying number of atomic layers. Another option to induce magnetism is to dope the Pd structures with 3d transition metals. We used first principles methods to calculate the magnetization density of different Co doped and undoped Pd structures. Calculations were carried out with the projector augmented waves (PAW) method in the LDA+U approximation and a plane wave basis set. In addition the linear augmented plane waves (LAPW) method was used and compared with the PAW results. Both methods show, that doping with 3d transition metals leads to magnetic moment at the Pd sites of the crystal. In case undoped Pd films the PAW results are similar to existing LAPW calculations.